"Firstness" validity in different word game dictionaries

Dictionary Validity
Scrabble US(US/Canada/Thailand - TWL/NWL) Yes
Scrabble UK(International - SOWPODS/CSW) Yes
Words with Friends(WWF) No

"firstness" Definition

  1. a fundamental category in Peircean philosophy comprising qualities like redness, hardness, bitterness, and nobility and expressive of possibility, spontaneity, and chance— compare SECONDNESS, THIRDNESS

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